LG LRM-519, Руководство по обслуживанию

Страница: 19 / 192

3-5
3. VIDEO PART-1
No display
IC302(73-pin)
‘3.3V’=high OK IC501(53-pin)
‘3.3V’= high OK
IC501(63-pin)
27MHz clock in OK
IC501(51,54-pin)
Clock in OK
NO
NO
NO
IC302 change
NO
OSC500 change
NO
Re-soldering
NO
R373 Re-soldering
YES
YES
YES
YES
YES
YES
YES YES
OSC500(3-pin)
27MHz clock out OK
YES
YES
R508 Re-soldering
IC103 check
IC501(44,45-pin)
I2C BUS OK
NO
IC501(56-pin)
Clock out OK
NO
Q504,Q505, R532 ~
R535 soldering OK
IC103 check
IC501 change
R521 ~ R524, L500
~ L503 Soldering OK
NO
Re-soldering
C544 ~ C547,C560 ~
C563 Soldering OK
NO
Re-soldering
Video Part OK
YES